“Under the Black Ensign” by L. Ron Hubbard
Publication date: August 1935
Original publication: Five Novels Monthly
Genre: Historical Fiction
Story description: A fiery woman of aristocratic birth, disguised as a boy, helps Tom Bristol—press-ganged, rescued by pirates then left to die on a deserted island—come out on top.
Currently available as part of the Stories from the Golden Age series, in the book Under the Black Ensign.